Attachment 1 - Specification Sheet.pdf

This is a technical specification document for the manufacture of composite training panels used by ASM in their Supplemental Advanced Composite Repair course. The panel, identified by NSN 9390-CO-MPO-SITE, is a composite structure measuring 18" x 18" with overall width and length tolerances of ±.125 inches.

The panel construction consists of four primary components: an exterior skin of 8 plies of quasi-isotropic lay-up unidirectional graphite epoxy tape (Hexcel T2C-190-12-F263-2 or equivalent Boeing BMS8-212 TY3 CLI GR190), a fiberglass/phenolic honeycomb core measuring 3/16-4.0" thick with 1" continuous height and no splices or butts, an interior skin of Kevlar 49 Aramid prepreg (Cytec MXM-7880-I285 or equivalent BMS8-218 ST285) in 4 plies with crowfoot cross-ply lay-up, and internal and external skins bonded to the core using film adhesive equivalent to BMS5-154 TY2 CLI GR5. The specification requires all surfaces to be wrinkle-free with no seams or butted joints. The panel features a ¼" radius on one edge and includes transition angles that must be uniform throughout.